Mathematics Umar Al-Khayyam (d. 1130) mathematician and poet of the ‘Rubaiyat,” advanced algebra extensively and developed a calendar more accurate than the Gregorian.
Ar-Razi (865-925) wrote more than 100 scientific works, many of which were translated from Arabic into Latin in 1279 and reprinted in Venice in 1542—almost seven hundred years after his birth.